/**
 * Enumeration of object snap modes used in AutoCAD.
 *
 * Object snap modes define the types of geometric points that can be
 * snapped to when drawing or editing entities. These modes help ensure
 * precise positioning and alignment of objects.
 */
export declare enum AcDbOsnapMode {
    /**
     * End point - snaps to the endpoint of a line, arc, or other entity
     */
    EndPoint = 1,
    /**
     * Middle point - snaps to the midpoint of a line or arc
     */
    MidPoint = 2,
    /**
     * Center - snaps to the center point of a circle, arc, or ellipse
     */
    Center = 3,
    /**
     * Node - snaps to a point entity
     */
    Node = 4,
    /**
     * Quadrant - snaps to the quadrant points of a circle or ellipse
     * (0°, 90°, 180°, 270°)
     */
    Quadrant = 5,
    /**
     * Insertion - snaps to the insertion point of text, blocks, or other objects
     */
    Insertion = 7,
    /**
     * Perpendicular - snaps to a point perpendicular to a line or arc
     */
    Perpendicular = 8,
    /**
     * Tangent - snaps to a point tangent to a circle or arc
     */
    Tangent = 9,
    /**
     * Nearest - snaps to the nearest point on an entity
     */
    Nearest = 10,
    /**
     * Center of the object - snaps to the centroid or center of mass of an object
     */
    Centroid = 11
}
/**
 * Converts an array of {@link AcDbOsnapMode} values into a single integer bitmask.
 *
 * ⚠️ Important:
 * {@link AcDbOsnapMode} values are **ordinal identifiers**, not bit flags.
 * Each mode is mapped to a bit position using the rule:
 *
 * `bit = (mode - 1)`
 *
 * This allows multiple object snap modes to be stored efficiently
 * in a single integer using bitwise operations.
 *
 * @param modes - Array of object snap modes to enable
 * @returns Integer bitmask representing the enabled object snap modes
 *
 * @example
 * ```ts
 * const mask = acDbOsnapModesToMask([
 *   AcDbOsnapMode.EndPoint,
 *   AcDbOsnapMode.MidPoint,
 *   AcDbOsnapMode.Perpendicular
 * ])
 * // mask === 131
 * ```
 */
export declare function acdbOsnapModesToMask(modes: AcDbOsnapMode[]): number;
/**
 * Converts an integer bitmask into an array of {@link AcDbOsnapMode} values.
 *
 * The function iterates over all {@link AcDbOsnapMode} enum values and
 * checks whether the corresponding bit (computed as `1 << (mode - 1)`)
 * is set in the provided mask.
 *
 * @param mask - Integer bitmask containing object snap mode flags
 * @returns Array of enabled {@link AcDbOsnapMode} values
 *
 * @example
 * ```ts
 * const modes = acDbMaskToOsnapModes(131)
 * // [
 * //   AcDbOsnapMode.EndPoint,
 * //   AcDbOsnapMode.MidPoint,
 * //   AcDbOsnapMode.Perpendicular
 * // ]
 * ```
 */
export declare function acdbMaskToOsnapModes(mask: number): AcDbOsnapMode[];
/**
 * Toggles a specific {@link AcDbOsnapMode} in an object snap bitmask.
 *
 * If the mode is currently enabled, it will be disabled.
 * If the mode is disabled, it will be enabled.
 *
 * @param mask - Current object snap mode bitmask
 * @param mode - Object snap mode to toggle
 * @returns Updated bitmask with the specified mode toggled
 *
 * @example
 * ```ts
 * mask = acdbToggleOsnapMode(mask, AcDbOsnapMode.MidPoint)
 * ```
 */
export declare function acdbToggleOsnapMode(mask: number, mode: AcDbOsnapMode): number;
/**
 * Checks whether a specific {@link AcDbOsnapMode} is enabled in the bitmask.
 *
 * @param mask - Object snap mode bitmask
 * @param mode - Object snap mode to test
 * @returns `true` if the mode is enabled; otherwise `false`
 *
 * @example
 * ```ts
 * if (acdbHasOsnapMode(mask, AcDbOsnapMode.EndPoint)) {
 *   // EndPoint snapping is enabled
 * }
 * ```
 */
export declare function acdbHasOsnapMode(mask: number, mode: AcDbOsnapMode): boolean;
/**
 * Enables a specific {@link AcDbOsnapMode} in the object snap bitmask.
 *
 * @param mask - Current object snap mode bitmask
 * @param mode - Object snap mode to enable
 * @returns Updated bitmask with the mode enabled
 *
 * @example
 * ```ts
 * mask = acdbEnableOsnapMode(mask, AcDbOsnapMode.Tangent)
 * ```
 */
export declare function acdbEnableOsnapMode(mask: number, mode: AcDbOsnapMode): number;
/**
 * Disables a specific {@link AcDbOsnapMode} in the object snap bitmask.
 *
 * @param mask - Current object snap mode bitmask
 * @param mode - Object snap mode to disable
 * @returns Updated bitmask with the mode disabled
 *
 * @example
 * ```ts
 * mask = acdbDisableOsnapMode(mask, AcDbOsnapMode.Nearest)
 * ```
 */
export declare function acdbDisableOsnapMode(mask: number, mode: AcDbOsnapMode): number;
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